Lightning arrester



Patented Dec. 27, 1932 UNITED STATES-- PATENT OFFICE 'Y 1 DOUGLAS L. cmnocx, or mammals, NORTH oaaomma LIGHTNING mns'ma Application filed June as, 1932. Serial No; 618,728.

The object of the invention is to provide -a lightning arrester for incorporation in the sists in a construction and combination of parts of which a preferred embodiment is illustrated in the accompanying drawing but to which embodiment the invention is not to be restricted. Continued use in practice may dictate certain changes or alterations and the right is claimed to make any which fall within the scope of the annexed claims.

In the drawing: I Figure 1 is an elevational view showing the invention applied in operative position.

Figure 2 is an elevational view showing a half of the shell or casing removed.

Figure 3 is an elevational view showing the removed half of the casing or shell.

Figure 4 is a sectional view on the plane indicated by the line 44 of Figure 1.

The device constituting the invention comprises the prongs 10 formcd with fuse clips 11. Theseprongs are laid in channels 12 in the two sections of a shell or casing 14 and 14'. The channels are formed half in one shell section and half in the other, as are also the fuse recesses 15. p l

Spring contact members 16 are provided and are formed with terminal fuse clips 17. These spring contact members lie in the recesses 18 which open at that end of the shell remote from the channels 12. Fuses 19 each are engaged with the clips 11 and 17 Between the recesses 18 and the shell section 14; a recess'20 is formed in section 14 and in this is seated a plate 21 having angularly turned ends 22 which are adjacent to but out of contact with the spring contacts registering 16'. plate is secured in place by a stud 23 extending laterally through the section and secured by means of a nut 24 bearing against the side of the section. A bindmg nut 25 is mounted on the free extremity of the screw and serves as a means for attaching a ground wire 26.

The two sections 14 and 14' are assembled I by a single bolt or screw passin through the sections of the shell.

The prongs 10 and their adjacent clips and the contacts 16 and their cli s, together with the connected fuses, mere y rest in {their recesses when the two shell sections are as-i reason of the shapes of the parts are held in their proper sembled but by recesses, the relationship. The prongs 10 constitute the means for connecting the arrester plu with a plug member-'28 inserted in the end socket or other receptacle and the plu 29 at.

the end of the flexible cord 30 may mserted in that end of the arrester plug designed for such reception, its prongs 31 passing up the recesses 18 and tact springs 16, between the .latterand the turned ends 22 of the late 21. Any lightning disc arge coming in over the line will then reach across the air (gap between t e prongs 31 an the turned en s 22 of the plate 21 and passing to the ground over the ground wire. 26. Any current following as a result of reducing the resistance of the air gap by the jumpone of the ing spark will result in blowin fuses 19. The fuse may be easi y replaced however, by separating the two sections of the shell and inserting a new fuse.

The invention having been described, what 90,

is claimed as new and useful is: V

1. A lightning arrestercomprising a shell consisting of complemental sections, and means for securing the same together, a late mounted on the inner face of one of sai sec tions andprovided. with outturned extremi- 95 ties. a bolt securing the plate in place and extending to the exterior of the section to provide a ground connection, prongs seated in channels in the sections, contacts seated in recesses in the sections, and fuses connecting eyes or openings 2 in the two 80 of a engaging the conound, jumping the prongs and contacts, the contact seating recesses opening at the end of the shell for the reception of the prongs of an attachment plug to dispose said prongs between said contacts and the end of said plate but spaced from the latter.

2. A lightning arrester comprising a shell consisting of complemental sections, and means for securing the same together, a plate mounted on the inner face of one of said sections and provided with outturned extremities, a bolt securing the plate in place and extending to the exteriorof the section to provide a ground connection, prongs seated in 15 channels in the sections, contacts seated in recesses in the sections, and fuses connecting the prongs and contacts, the contact seating recesses opening at the end of the shell for the reception of the prongs of an attachment plug to dispose said prongs between said contacts and the end of said plate but spaced from the latter, said plate having its extremities turned at angles to the body portion so as to parallel the prongs of the connected attach-- 25 mentplug.

3. lightning arrester comprising a shell consisting of complemental sections and means for securing the same together, a plate mounted on the inner face of one of the sections, a ground connecting binding post exterior to the shell and electrically connected with said plate, line connecting members seated in channels in the sections, contacts seated in recesses in the sections and electricallyvcon- 35 nected with the line connections, the contact seating recesses opening at the end of the shell for thereception of the prongs of an attaching plug to dispose said prongs between said contacts and the end of said plate but spaced 40 from the latter. v s In testimon whereof I aifix rl1isi ature.

D UGLAS L. CR D K. 

